don't I bs? don't you bs? doesn't he bs? don't we bs? don't you bs? don't they bs?
Present continuous
am I not bsing? aren't you bsing? isn't he bsing? aren't we bsing? aren't you bsing? aren't they bsing?
Preterite
didn't I bs? didn't you bs? didn't he bs? didn't we bs? didn't you bs? didn't they bs?
Preterite continuous
wasn't I bsing? weren't you bsing? wasn't he bsing? weren't we bsing? weren't you bsing? weren't they bsing?
Present perfect
haven't I bsed? haven't you bsed? hasn't he bsed? haven't we bsed? haven't you bsed? haven't they bsed?
Present perfect continuous
haven't I been bsing? haven't you been bsing? hasn't he been bsing? haven't we been bsing? haven't you been bsing? haven't they been bsing?
Pluperfect
hadn't I bsed? hadn't you bsed? hadn't he bsed? hadn't we bsed? hadn't you bsed? hadn't they bsed?
Pluperfect continuous
hadn't I been bsing? hadn't you been bsing? hadn't he been bsing? hadn't we been bsing? hadn't you been bsing? hadn't they been bsing?
Future
won't I bs? won't you bs? won't he bs? won't we bs? won't you bs? won't they bs?
Future continuous
won't I be bsing? won't you be bsing? won't he be bsing? won't we be bsing? won't you be bsing? won't they be bsing?
Future perfect
won't I have bsed? won't you have bsed? won't he have bsed? won't we have bsed? won't you have bsed? won't they have bsed?
Future perfect continuous
won't I have been bsing? won't you have been bsing? won't he have been bsing? won't we have been bsing? won't you have been bsing? won't they have been bsing?
Conditional
Present
wouldn't I bs? wouldn't you bs? wouldn't he bs? wouldn't we bs? wouldn't you bs? wouldn't they bs?
Present continuous
wouldn't I be bsing? wouldn't you be bsing? wouldn't he be bsing? wouldn't we be bsing? wouldn't you be bsing? wouldn't they be bsing?
Past
wouldn't I have bsed? wouldn't you have bsed? wouldn't he have bsed? wouldn't we have bsed? wouldn't you have bsed? wouldn't they have bsed?
Past continuous
wouldn't I have been bsing? wouldn't you have been bsing? wouldn't he have been bsing? wouldn't we have been bsing? wouldn't you have been bsing? wouldn't they have been bsing?